2 papers
astro-ph2006
Chemical Evolution of the Galactic Bulge
Brad K. Gibson, Angela J. MacDonald, Patricia Sanchez-Blazquez +1
Adopting a single-zone framework, with accretion of primordial gas on a free-fall timescale, the chemical evolution of the Galactic bulge is calculated, assuming (i) a correspondin…
astro-ph2004
Rapid Variations in V2275 Cyg (Nova Cyg 2001 #2)
P. M. Garnavich, A. J. Macdonald, B. Wu +4
We present time-resolved CCD photometry of V2275 Cyg 790 days after the nova outburst. The data show a 20% peak-to-peak oscillation with a period of 24 minutes. The period appears…